<?php

header("content-type:text/html;charset=utf-8");

class Car{
	private $carMode;
	private $carBand;
	private $weight;
	private $speed;


	function Car($m,$b,$w,$s){
	   $this->carMode = $m;
	   $this->carBand = $b;
	   $this->weight = $w;
	   $this->speed = $s;
	}


	function getWeight(){
		return $this->weight;
}
    function getSpeed(){
		return $this->speed;
	}
}

$car1 = new Car("捷达","大众",1.5,160);
echo "<pre>";
print_r($car1);
echo $car1->getWeight();
echo $car1->getSpeed();

class BMWCar extends Car{}

$bmw1 = new BMWCar("宝马","大众",2,200);
echo "<pre>";
print_r($bmw1);
echo $bmw1->getSpeed();
?>